FDP8442-F085 N-Channel MOSFET 40V 23A/80A TO-220-3 Equivalent & Substitute Parts

Part Overview

The FDP8442-F085 is an N-Channel MOSFET manufactured by onsemi, rated for 40V drain-to-source voltage with continuous drain current of 23A (Ta) and 80A (Tc). This device is packaged in a through-hole TO-220-3 configuration and is part of the PowerTrench® series. The FDP8442-F085 carries an Obsolete product status, making identification of functionally equivalent alternatives necessary for ongoing design support, production continuity, and component sourcing. Equivalent substitutes must maintain compatibility across electrical ratings, thermal characteristics, and mechanical packaging while meeting automotive-grade qualifications.

Key Parameters

Parameter	Value	Unit
Drain-to-Source Voltage (Vdss)	40	V
Continuous Drain Current @ 25°C (Tc)	80	A
Continuous Drain Current @ 25°C (Ta)	23	A
On-Resistance (Rds On) @ 80A, 10V	3.1	mOhm
Gate Threshold Voltage (Vgs(th)) @ 250µA	4	V
Gate Charge (Qg) @ 10V	235	nC
Input Capacitance (Ciss) @ 25V	12200	pF
Power Dissipation (Tc)	254	W
Operating Temperature Range	-55 to 175	°C
Package Type	TO-220-3	Through Hole
Qualification	AEC-Q101	Automotive

Substitute Part Grouping Explanation

Substitution of the FDP8442-F085 is determined by the following critical electrical and mechanical parameters:

Primary Matching Criteria:

Drain-to-Source Voltage (Vdss): 40V minimum
Continuous Drain Current (Tc): 80A or greater
Package Type: TO-220-3 through-hole configuration
Operating Temperature Range: -55°C to 175°C
Automotive Grade Qualification: AEC-Q101 compliance

Secondary Compatibility Factors:

On-Resistance (Rds On): Values within acceptable range for thermal and efficiency performance
Gate Threshold Voltage (Vgs(th)): Compatible drive voltage requirements
Gate Charge (Qg): Acceptable for gate driver circuit design
Input Capacitance (Ciss): Acceptable for switching speed and driver loading

Substitute parts are grouped into two categories: Direct Through-Hole Substitutes (same TO-220-3 package) and Alternative Package Options (surface-mount alternatives for design flexibility). All listed substitutes maintain 40V Vdss rating and support 80A or higher continuous drain current at Tc, ensuring functional equivalence within the specified operating envelope.

Parameter Comparison

Parameter	FDP8442-F085	IPP041N04NGXKSA1	IPP023N04NGXKSA1	IPP039N04LGXKSA1	AOT240L	PSMN2R8-40PS,127	IRL1404ZPBF	NVMFS5C450NLAFT1G
Manufacturer	onsemi	Infineon	Infineon	Infineon	Alpha & Omega	Nexperia	Infineon	onsemi
Vdss (V)	40	40	40	40	40	40	40	40
Id (Tc) (A)	80	80	90	80	105	100	75	110
Rds On @ 10V (mOhm)	3.1 @ 80A	4.1 @ 80A	2.3 @ 90A	3.9 @ 80A	2.9 @ 20A	2.8 @ 10A	3.1 @ 75A	2.8 @ 40A
Vgs(th) (V)	4 @ 250µA	4 @ 45µA	4 @ 95µA	2 @ 45µA	2.2 @ 250µA	4 @ 1mA	2.7 @ 250µA	2 @ 250µA
Qg @ 10V (nC)	235	56	120	78	72	71	110	35
Ciss @ 20-25V (pF)	12200 @ 25V	4500 @ 20V	10000 @ 20V	6100 @ 25V	4300 @ 20V	4491 @ 20V	5080 @ 25V	2100 @ 20V
Power Dissipation (W)	254	94	167	94	176	211	230	68
Package Type	TO-220-3	TO-220-3	TO-220-3	TO-220-3	TO-220	TO-220AB	TO-220AB	5-DFN (Surface Mount)
Product Status	Obsolete	Active	Active	Not For New Designs	Not For New Designs	Obsolete	Active	Active
AEC-Q101	Yes	Yes	Yes	Yes	No	Yes	Yes	Yes
Operating Temperature (°C)	-55 to 175	-55 to 175	-55 to 175	-55 to 175	-55 to 175	-55 to 175	-55 to 175	-55 to 175

Engineering Selection Recommendations

Recommended Primary Substitutes (Active Status, AEC-Q101 Qualified):

IPP041N04NGXKSA1 (Infineon OptiMOS™ series) – Active product status with AEC-Q101 qualification. Maintains 40V Vdss and 80A Tc rating. TO-220-3 package provides direct mechanical compatibility. Gate charge of 56 nC is lower than the original, reducing driver power dissipation. Rds On of 4.1 mOhm is slightly higher but within acceptable thermal margins for most applications.
IPP023N04NGXKSA1 (Infineon OptiMOS™ series) – Active product status with AEC-Q101 qualification. Supports 90A Tc, exceeding the original 80A specification. TO-220-3 package ensures direct fit. Superior Rds On of 2.3 mOhm at 90A provides improved efficiency. Gate charge of 120 nC requires driver circuit verification for switching frequency compatibility.
IRL1404ZPBF (Infineon HEXFET® series) – Active product status with AEC-Q101 qualification. Rated for 75A Tc, slightly below the original 80A but within acceptable margin for most applications. TO-220AB package is mechanically compatible with TO-220-3 footprints. Rds On of 3.1 mOhm matches the original specification. High inventory availability (25,300 units) supports production continuity.

Alternative Substitutes (Conditional Use):

PSMN2R8-40PS,127 (Nexperia) – Obsolete status limits suitability for new designs but supports 100A Tc with 2.8 mOhm Rds On. AEC-Q101 qualified. TO-220AB package compatible. Use only for legacy system maintenance or where existing supply chain is established.
NVMFS5C450NLAFT1G (onsemi) – Active product status with AEC-Q101 qualification. Surface-mount 5-DFN package requires PCB redesign but offers superior performance: 110A Tc, 2.8 mOhm Rds On, and significantly lower gate charge (35 nC). Suitable for new designs with surface-mount capability.

Not Recommended:

AOT240L (Alpha & Omega) – Lacks AEC-Q101 automotive qualification, disqualifying it for automotive applications despite electrical compatibility.
IPP039N04LGXKSA1 (Infineon) – Not For New Designs status indicates end-of-life trajectory; use only for legacy support.

Frequently Asked Questions (FAQ)

Q: Can I use IPP041N04NGXKSA1 as a direct replacement for FDP8442-F085?

A: Yes. Both devices are rated for 40V Vdss, 80A Tc, and packaged in TO-220-3. IPP041N04NGXKSA1 is Active status with AEC-Q101 qualification. The primary difference is gate charge (56 nC vs. 235 nC), which reduces driver power dissipation. Verify gate driver circuit can accommodate the lower charge requirement at your switching frequency.

Q: What is the difference between TO-220-3 and TO-220AB packages?

A: Both are through-hole packages with identical pin configurations and footprints. TO-220AB is a variant designation used by some manufacturers. Devices in either package are mechanically interchangeable on standard TO-220 PCB layouts.

Q: Why does NVMFS5C450NLAFT1G have lower gate charge than the original?

A: NVMFS5C450NLAFT1G uses a 5-DFN surface-mount package, which enables more compact die design and lower parasitic capacitances compared to the through-hole TO-220-3 package. Lower gate charge reduces switching losses and driver circuit stress.

Q: Is AOT240L suitable for automotive applications?

A: No. While AOT240L meets electrical specifications (40V, 105A Tc), it lacks AEC-Q101 automotive qualification. Use only in non-automotive applications or where automotive certification is not required.

Q: What does "Not For New Designs" status mean?

A: This designation indicates the manufacturer is discontinuing the product and recommends against using it in new designs. These parts are suitable only for legacy system maintenance or replacement in existing products. For new designs, select Active status alternatives.

Q: Can I use IPP023N04NGXKSA1 if my circuit requires exactly 80A?

A: Yes. IPP023N04NGXKSA1 is rated for 90A Tc, which exceeds the 80A requirement. The higher current rating provides design margin and improved thermal performance. Verify that the lower Rds On (2.3 mOhm) does not introduce unintended circuit behavior changes due to reduced on-state voltage drop.

Q: How do I verify gate driver compatibility with substitute parts?

A: Compare gate charge (Qg) and gate threshold voltage (Vgs(th)) specifications. Lower gate charge reduces driver power dissipation and may allow higher switching frequencies. Verify your gate driver can supply the required gate voltage (typically ±10V to ±20V) and has sufficient current capacity for the specified gate charge at your operating frequency.

Q: Is RoHS3 compliance maintained across all substitutes?

A: Yes. All listed substitute parts are RoHS3 compliant, matching the original FDP8442-F085 environmental compliance status.

Q: What is the inventory status of recommended substitutes?

A: IPP041N04NGXKSA1 has 4,150 units in stock. IPP023N04NGXKSA1 has 877 units. IRL1404ZPBF has 25,300 units. NVMFS5C450NLAFT1G has 871 units. Verify current availability with your component supplier before finalizing procurement.

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